What the postulates of planck’s quantum theory? : quantum physics

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What is L.D.R(light dependent resistor)

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what happens to the period of a simple pendulum taken into a deep mine ?

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Distinguish between optical and acoustic resonance.

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What is a Diamond ?

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Tell me how we are getting light from electrical bulb?

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Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. At 72kmph, how long did it take forthe car to cover that distance?

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What is a crest?

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What is black body ?

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explain the proper definition of light?

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I’ve heard that in quantum physics a lot of fancy mathematical objects like hilbert spaces are used, and that in particular, measurable quantities are described by self-adjoint operators. Are these things related to what you have just explained? : quantum physics

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Tell me why is n-type conductor is neutral?

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